Goleopterological Notices, VI. 555 



17. I,, caiiesceiis ]\Iann. — Bull. Mosc, 1843, p. 247 (Dasytes) ; Mots.: 

 1. c, 1859, ii, p. 391 (Listius); Lee: Proc. Acad., Phila., 186G, p. 357 (Lis- 

 trus). 



Somewhat narrow, convex, polished, black with a strong viri- 

 di-ffineous lustre; legs black, the tibite and tarsi faintly- picescent ; 

 antennae black, the second joint piceo-testaceous ; pubescence 

 rather short and sparse, moderatel}' coarse, denuded in large 

 areas on the el^^tra of which two wide and straight transverse 

 fascite on the elytra behind the middle are especially noticeable, the 

 anterior frequently interrupted at the suture ; interspaces on the 

 head and median parts of the pronotum smooth, flat and almost 

 sculptureless. Head nearly four-fifths as wide as the prothorax, 

 rather sparsely and unequally- punctate, the impressions very 

 feeble ; eyes moderatel}' prominent ; antenna? slender, nearly one- 

 half longer than the prothorax, the tenth joint slightly longer 

 than wide. Prothorax two-fifths Avider than long, the sides con- 

 vergent and feebly arcuate from near the base ; disk rather 

 closely and strongly punctate, rugose and opaque in lateral 

 fourth. Elytra three-fourths longer than wide, slightly wider 

 than the prothorax, parallel, parabolic at apex, coarsely and mod- 

 eratel}' closely punctate. Length 2.7 mm.; width 1.0 mm. 



California (Marin Co.). The fifth ventral of the male is one- 

 half longer than the fourth, flat and normally pubescent in basal 

 half, but clothed with long dense and semi-erect black hairs and 

 also feebh' impressed toward apex, the latter broadl}' and dis- 

 tinctly sinuate ; behind the sinus the pubescent under surface of 

 dorsal pygidium is distinctly visible. Four perfectly uniform male 

 specimens. 



18. L. diflicilis Lee— Proc. Acad. Nat. Sci., Phila., II, p. 170 (Dasy- 

 tes); 1. c, l.'^ee, p. 3.58 (Li.strus). 



Narrow, convex, black, with a greenish-metallic lustre, the pu- 

 bescence nearly as in canescens, the denuded band just behind 

 the middle feebly- bisinuate and the snbapical band frequentlj^ 

 broken into two spots on each elytron. Head three-fourths as 

 wide as the prothorax, the eyes prominent and at some distance 

 from the base ; surface confusedly punctato-rugose ; antenna' pi- 

 ceous, the basal joint black, the second testaceous, outer joints 

 cinereo-pubescent, the tenth as wide as long. Prothorax one-half 

 wider than long, the sides strongly convergent and almost 



